About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Development of Additively Manufactured Anodes for Aluminum-Air
Batteries: Influence of Microstructure on Performance |
| Author(s) |
Ajaykumar Udayraj Yadav, Suryaanarayana Vikrant Karra |
| On-Site Speaker (Planned) |
Ajaykumar Udayraj Yadav |
| Abstract Scope |
Aluminum-air (Al-air) batteries are promising high-energy-density power sources, but conventional aluminum anodes suffer from self-corrosion, hydrogen evolution, and poor durability. This study investigates a 3D-printed AlMgScZr alloy as an advanced anode material for Al-air batteries. The alloy exhibits a bimodal fish-scale microstructure with equiaxed and columnar grains (1–12 µm), providing improved mechanical strength and electrochemical stability. Sc and Zr promote grain refinement and grain boundary pinning, enhancing durability compared to pure aluminum. Electrochemical tests in 4M KOH showed an open-circuit potential of −1.65 V and a corrosion current density of 10⁻³ A/cm², indicating strong suitability for Al-air battery applications. Mg effectively suppresses parasitic hydrogen evolution, improving anode efficiency. Heat treatment further optimized the microstructure and electrochemical behavior. These results demonstrate the potential of additively manufactured AlMgScZr alloys as high-performance, long-lasting anodes for next-generation Al-air batteries. |